I was in China, and suddenly got an SMS from Maxis saying my 500MB data roaming has been activated eventhough my Mobidata was off. True enough, i was charged RM38 in my latest bill.
I decided to do research on this Maxis roaming plan, and diacovered how easily you can be cheated. Apparently if you roam on certain networks overseas, and you activate your Mobidata, the plan will be automatically activated.
Imagine, you forget to off your mobidata before boarding the plane, and when you arrive and on your phone and so happen roam on these particular networks, you will automatically be charged! You will not even be asked if you agree, the plan will just be activated.
Then you have to go through all the trouble of getting a refund when you come back home

Just remember to switch our phone to 3G mode whenever roaming. Only if roaming data plan baru on LTE. The LTE is the culprit triggering the data, sometimes telcos will adjust our balance but sometimes they missed also.

Is there a way to stop these charges? Celcom just whacked me >RM50 on data while I was in Korea.

I am 100% sure my Data was switch to OFF, and almost all the charges happen at nite while sleeping and not using phone.

Strange thing is non of my travelling mates has this problem. Only prepaid get this problem I suppose.

Does anyone know a good way to stop these charges, besides uninstalling all apps?